Evaluation of microdilution and disk diffusion methods for antifungal susceptibility testing of dermatophytes
Why this work is in the frame
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Bibliographic record
Abstract
A total of 63 dermatophyte strains belonging to 6 species (Trichophyton rubrum (16), T. mentagrophytes (16), T. tonsurans (20), T. violaceum (2), Microsporum canis (7), and Epidermophyton floccosum (2)) were tested for their in vitro susceptibility to a range of antifungal drugs using disk diffusion and Clinical Laboratory Standards Institute M38-A (CLSI, formerly NCCLS) broth microdilution methods. The antifungals used were ciclopirox (CIC), terbinafine (TER), griseofulvin (GRE), fluconazole (FLC), itraconazole (ITR), posaconazole (POS), and ravuconazole (RAV). In the broth microdilution assay terbinafine was found to have the highest activity followed by ravuconazole, posaconazole, ciclopirox, itraconazole, griseofulvin and fluconazole. In the disk diffusion assay terbinafine produced the largest inhibition zone diameters (IZDs) on Dermasel agar media followed by ravuconazole, griseofulvin, posaconazole, and itraconazole. A significant correlation was not observed between the minimum inhibitory concentrations (MICs) and IZDs, but some correlations were observed for POS, RAV, and TER (correlation coefficients r=-0.507, -0.249, -0.267, P<0.05, respectively). MICs obtained by the microdilution method with ITR and GRE did not correlate with IZDs obtained in disk diffusion assays in this study. The ciclopirox (20 microg/disk) and fluconazole (25 microg/disk) did not produce well defined inhibition zone diameters on Dermasel agar medium.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.007 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it